I'm a full time employee of a small company that does not provide any health insurance benefits. As a result I purchase my health insurance as an individual. In addition to my full time work where I receive a w2 I also consult on the side and get a 1099-MISC from my client. I earn roughly 25% of my net income from consulting. Based on this I understand that self employed people can deduct health insurance premiums. Given my circumstances can I deduct health insurance premiums on a schedule C?
Checkout the worksheet on page 20 of Pub 535. Also the text starting in the last half of the third column of page 18 onward.
The fact that you get a W-2 is irrelevant as far as I can see. Your self-employment business has to meet some criteria (such as being profitable) and the plan needs to be provided through your own business (although if you're sole proprietor filing on Schedule C, it looks like having it in your own name does the trick). Check the publication for all of the rules.
There is this exception that would prevent many people with full-time jobs on W-2 from taking the deduction:
Other coverage. You cannot take the deduction for any month you were eligible to participate in any employer (including your spouse's) subsidized health plan at any time during that month, even if you did not actually participate. In addition, if you were eligible for any month or part of a month to participate in any subsidized health plan maintained by the employer of either your dependent or your child who was under age 27 at the end of 2014, do not use amounts paid for coverage for that month to figure the deduction.
(Pages 20-21). Sounds like in your case, though, this doesn't apply. (Although your original question doesn't mention a spouse, which might be relevant to the rule if you have one and he/she works.)
The publication should help. If still in doubt, you'll probably need a CPA or other professional to assess your individual situation.